Problem with in dash dvd player

[Jville140db]

I had a guy come in with a 2007 or 08 suburban and wanted to put in an avic d3 long story short install went good as far as i know i put in that crazy intergration harness thing for gm's to retain bose and warning chime and everything worked great well two days later he calls me and tells me the check engine light came and the indash turns on and off randomly for periods of time he brought it in and everything seemed fine but i swapped back in the factory and the check engine light was still on so put the in dash back in with a new intergration harness and same deal i could'nt get it to do the random turn off thing though any ideas what may have made that happen im freakin stuck and dont know what to tell him I sent his to the dealer to have the truck scanned but id like to have a little better answer when he calls back HELP

edit spelling

[Kasey]

IIRC The engine light goes on and off randomly in Steve's tahoe to

[Jville140db]

IIRC The engine light goes on and off randomly in Steve's tahoe to

well the odd thing is its on and it wont go off at all without being reset it doesn't flicker or on for few min and then off its weird why after putting in an in dash would that come on

[savoyrocks]

well the odd thing is its on and it wont go off at all without being reset it doesn't flicker or on for few min and then off its weird why after putting in an in dash would that come on

i've had all sorts of weird krap happen to me with the new lan and data bus systems. if i had to guess i'd say the current draw between the new head unit plus the interface itself is more than the factory radio and the computer senses this. you would think that with the price you pay for these krappy interfaces you would get a reliable piece of equipment. i guess it's because the technology is changing at such a rapid rate it's hard for them to keep up. i know this doesn't help you with your customer but i feel your pain bro. if you haven't tried it yet, disconnect the battery for a while. it probably won't help, but it's worth a try. two things i don't remember to do until after the install and then it's too late are....1. synch the interface by turning the key on for 30 seconds and then turning it off. some interfaces have other ways of synching. they don't specify whether they want you to synch the interface with it plugged into the radio or not plugged into the radio. this is probably because they know their interfaces are unreliable and if something goes wrong they can say well you must have not synched it or something like that. and 2. disconnect the battery before doing anything and that includes removing the factory radio and reconnecting the batt. after all connections have been made. i doubt this would make any difference but again, it's worth a try. good luck man.

[Jville140db]

like i said though it was not on when it left it came on a few days later however i didn't know about the whole sync thing good info on that thanks any one got any ideas